Window-ventilator.



A. W. SIMONSON.

WINDOW VENTILATOH.

APPLICMION FILED MAYH. 1917.

Patented Feb. 19, 1918.

, illustrate the invention,

v Uii TED STATES PATENT oFF oE.

ALFRED W. SIMONSOK, O1 MINNEAPOLIS, MINNESUTA.

wmnow-vnn'rrmroa.

To all whom it may concem:

Be i known that I, ALFRED W. SIMONSON, a -citizen of the United Statesresiding at Minneapolis,-,in the county of I-iennepin and State of'Minnesota, have invented certain new and, useful Improvements inWindow- Ventilators and I do hereby'declare the following to be a full,clear, and exact descri tion of the invention, such as will one 1eothers skilled in the art to which it ap rtains to make and use thesame.

y invention has. for its object to provide an extremely simple andhighly eflicient ventilator for windows; and, to this end, it consistsof the novel devices and combinations of devices hereinafter describedand defined in the claims.

In the accompanying drawings, which ke characters indicate like partsthroughout the several views.

Referring to the drawings,

Figure is a fragmentary perspective view 'ofa'win'dow having theinvention inoor orated therein and ig. 2 is a view in transversevertical section with some parts shown in difl'erent positions by meansof broken lines,

The numeral 3 indicates a window frame having mounted therein for.vertical sliding movement upper and lower sashes 4 and 5, respectively.A look 6 is provided for. securing the two sashes closed. 011 each sideof the lock 6, the inner faces of the meetingrails lofthe sashes and 5are cut away to afl'ord apertures 7 to permit the passage of air intothe room. Formed in the to faces of the meeting-rails of the sashes 4 an5 and surrounding each aperture 7,, is a marginal recess 8. f

. A cover plate 9 is provided for each apertime 8 and fitted, one ineach of the recesses 8 with its upper face flush with the up Hersurfaces of the meeting-rails of the sas es.

4t and 5. These cover plates'9 overlap the jointbetween themeeting-rails of the. sashes 4 and 5 and, as shown, are secured byhinges 10'to the'meeting-rail of said upper sash.

T-he hinges 10 are constructed to work under suflicient friction tosupport the cover platesj Specification of Letters Patent.

9 in various different open positions, as indicated by broken lines inFig.2. Cut in the intermediate portion of the free edge of each coverplate 9,1is a' thumb-hold 11 by means of which an operator may t hold ofsaid cover plate to lift the same. setting the cover lates in differentopen positions, the supp y of. fresh air admitted through the apertures7 may be regulated,

at will. In locating one of the apertures 7 r on each side of the sashlook 6, said sash lock is not interfered with, in any The size of theaperture 7 may be varie at will, depending upon the maximum amount ofair to be admitted to the room. Informing the aperture 7 in the opposingfees of the meeting-rails, very little work is hired and saidmeeting-rails are not weakened toany' appreciable extent. In someinstances, one aperture 7 may be large enough to admit the requiredamount of fresh air. When the cover plates 9 are closed, the same areentirely out of sight, thus not marrin the appearance of the window, andthe cave the top surfaces of the meeting-rails perfectly smooth, so thatthere is no chance for the accumulation of dust.

What I claim is z--- 1; In a window ventilator, the combination withupper andlower window sashes, one of the meeting-rails of said sashhaving its inner face cut away to form an air passageway between themeeting-rails, of a cover plate hinged to one of the meetingrails andarranged to close the passageway. l'. p a

2. In a window ventilator, the combination with upper and lower windowsashes having the inner faces of their meeting-rails out away to form anair passageway which v extends completely through both thereof, of g-00. meeting-rails and arranged to close the 1 a single cover platehinged to one of the passageway.

In testimon whereof afiix my si m I in presence 0 two witnesses.Witnesses:

' EVA E. Komo,

Hnmr D. Krmonn.

ALFRED w.sIMoNsoN". l

